JPS6310078B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a winch that winds a rope between two rotating shafts while the base end of the rope is pulled by an endless rotating band.

In conventional winches, the base end of the rope is fastened to a drum, and the rope is wound onto the drum while rotating the drum. However, conventional winches using this drum had a serious problem in that the winding speed varied depending on the number of winding stages. In other words, as the number of winding steps increases and the winding becomes thicker, the winding speed gradually increases, and there is a significant difference in the winding speed between the beginning and the end of the winding, which makes it difficult for the operator to move the drum. Not only is it necessary to take measures such as adjusting the rotation speed or installing a separate speed governor, but the drive motor also needs to have enough driving force to handle the torque at the end of winding. For this reason, a large motor had to be used as the drive motor. In addition, because conventional winches have a three-dimensional shape due to the presence of the drum, it is necessary to take up a high installation space, and especially when used on ships, the center of gravity becomes high. The problem was that it affected the stability of the system. In addition, since the rope is wound around the drum in a dumpling-like manner, it is necessary to wind the rope while being guided by a shifter, which requires a lot of cost for the attached equipment, which increases the cost and maintenance. There were also management issues.

The present invention has been made to solve these conventional problems, and its purpose is to enable the rope to be wound at a constant speed,
Moreover, its planar shape allows it to be installed in a narrow space and lowers the center of gravity.
To provide a winch that has a simple structure and can surely prevent random winding.

That is, in order to achieve this object, the winch of the present invention has two rotating shafts A and B supported in parallel, and winding portions a and b of the rope R are respectively mounted on the rotating shafts A and B. At the same time, spiral grooves 5a and 5b are respectively formed at one end of the winding part, and a guide groove 7b for pulling in the rope R is formed at the other end of one of the winding parts, and the above-mentioned Spiral grooves 5a and 5 are provided between the rotating shafts A and B.
The endless rotating belt 8 is suspended in a state adjacent to b, the base end of the rope R is attached to the endless rotating belt 8, and the base end of the rope R is pulled by the rotation of the endless rotating belt 8. Rope R pulled in from guide groove 7b
The structure is such that it is wound up between winding sections a and b.

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a plan view showing a winch W which is an embodiment of the present invention.

In the figure, A and B are rotating shafts, respectively, which are supported in parallel between the machine frames 1 and 1, and one rotating shaft B is used as a drive shaft and is connected to a hydraulic motor 2 via a coupling 3. Note that 4 and 4 are bearings, respectively. Next, a and b are the winding parts formed on the rotating shafts A and B, respectively; in this case, one of the rotating shafts A
The winding portion a has a spiral groove 5a formed at one end, and a large number of parallel grooves 6a continuing from the spiral groove 5a to the other end. Further, the winding portion b of the other rotating shaft B has a spiral groove 5 at one end.
b and wire rope R at the other end.
A guide groove 7b for retraction is formed, and a smooth shaft 6b is formed between the guide groove 7b and the spiral groove 5b. The helical grooves 5a and 5b are twisted in such a way that the direction in which the helical movement due to the rotation of the rotating shaft is inward of the winding portion (direction of arrow m).

Next, 8 is an endless rotation band, and the spiral grooves 5a, 5
It is suspended under tension between rotating shafts A and B at a position adjacent to b. Incidentally, this endless rotating band 8 has a function as a power transmission belt that transmits power from the rotating shaft B to the rotating shaft A.

Then, the base end of the wire rope R is attached to the endless rotation band 8, and the wire rope is pulled in from the guide groove 7b while the base end of the wire rope R is pulled by rotating the endless rotation band 8. R
is wound up between winding portions a and b. Incidentally, reference numeral 9 denotes a fitting for the wire rope R, which fastens the base end of the wire rope R to the inner side 8' of the endless rotation band 8.

Therefore, when the winch W of the above embodiment is used, when the hydraulic motor 2 is operated, the rotating shaft B is rotated in the direction of the arrow n by the rotational power from the hydraulic motor 2, and the rotating shaft B is rotated through the endless rotation band 8. The rotation axis A rotates in the same direction. In this state, the endless rotation band 8 rotates while pulling the base end of the wire rope R, and along with this, the endless rotation band 8 rotates while pulling the base end of the wire rope R.
is drawn in through the guide groove 7b and is sequentially wound up between the winding portions a and b of the rotating shafts A and B. That is, in this case, since the base end portion of the wire rope R is wound between the spiral grooves 5a and 5b, the base end portion is guided by the spiral grooves 5a and 5a as it is wound up, and is guided by the arrow m. In addition, the opening angles θ and θ' of the wire rope R, which is wound in a spiral manner between the winding parts a and b, are to be kept the same. It has an effect. Therefore, as mentioned above, when the base end of the wire rope R moves laterally in the direction of the arrow m, the opening angles θ and θ' of the wrapped portion become different, so this wrapped portion moves laterally in the direction of the arrow m. and attempts to keep the opening angles θ and θ the same, and this lateral movement spreads to the other hanging parts one after another, so each hanging part is moved by its own lateral movement or by being pushed from the proximal side. , while moving laterally in the direction of arrow m, the sheets are packed in order from the pull-in side, and are wound up between winding sections a and b in an orderly manner without being wound up randomly. still,
In this case, the winding portion a on one rotating shaft A
Since the parallel grooves 6a are formed in the wire rope R, it is possible to prevent an accident in which a part of the wire rope R rapidly slides sideways and, due to its momentum, climbs over another part of the wire rope R.

In addition, since the wire rope R is wound while moving laterally in the direction of the arrow m, the winding limit is reached when the winding sections a and b are all wrapped up, which means that the number of winding stages is one stage. This means that the winding speed is constant.

Although one embodiment of the present invention has been described above with reference to the drawings, the specific configuration of the present invention is not limited to the above embodiment.

For example, specific dimensions such as the diameter and length of the rotating shaft and the distance between the shafts are appropriately determined by taking into consideration the diameter of the wire rope, the winding length, the installation space, and the like.

Further, the drive means is not limited to the hydraulic motor 2 of the embodiment, but an electric motor, a manual handle, etc. can be used, and the endless rotation band 8 can also be used for power transmission from the rotation shaft B to the rotation shaft A. In addition to being used as a power transmission belt, for example, means such as a power transmission belt or a power transmission gear may be separately provided, and the endless rotating belt is not limited to a belt structure but may have a chain structure.

Furthermore, although the parallel groove 6a is formed only on one winding part a in the embodiment, it is not necessary to provide this parallel groove 6a. This is preferable because the state is stable, and from this point of view, this embodiment in which the parallel grooves 6a are formed can be said to be a preferred embodiment. Incidentally, this parallel groove may be provided in both the winding portions a and b, respectively. Moreover, the guide groove 7b for retraction is provided on either one of the rotating shafts, and may be provided on the rotating shaft A, contrary to the embodiment.
Further, regarding this guide groove 7b, as shown in FIG.
If the wire rope R drawn through the guide groove 7b is pressed by the presser roller 10, an accident in which the wire rope R comes off from the guide groove 7b can be prevented, and even when the operation is stopped, It is possible to prevent the wound wire rope R from sagging. In FIG. 2, reference numeral 11 denotes a compression spring, and the elastic force of this spring 11 presses the presser roller 10. Further, 12 is a support rod for the presser roller, and 13 is a guide tube.

The winch of the present invention can be used as a hoist in all industrial fields such as cargo handling, ships, and construction, and can be used with wire ropes, hemp ropes, synthetic ropes, strings, etc. Can be used.

As explained above, the winch of the present invention provides many effects listed below.

(1) The winding speed of the rope is constant, so
It is possible to maintain a constant speed from the start of winding to the end of winding.

(2) Since the torque is constant from the start of winding to the end of winding, there is no need to use a large drive motor as in the past, and the drive motor can be made lighter and smaller.

(3) Since no drum is used, the shape is flat, the center of gravity can be lowered, and it can be installed in narrow spaces.

(4) Since the rope is wound up while moving horizontally by itself, it can be wound up in an orderly manner without using a separate device such as a shifter.

(5) Since the rope is wound through the guide groove, the rope retracting position can be positioned at a specific position to prevent the rope from swinging, and this retracting position can be set as the rope sensing position of the automatic control device. can do.

(6) It does not require ancillary devices such as a speed governor or shifter, and its structure is simple, so it can be manufactured at low cost and the effort of maintenance management can be reduced.

[Brief explanation of the drawing]

FIG. 1 is a plan view of a winch according to an embodiment of the present invention, and FIG. 2 is a side view showing a state in which a presser roller is provided in a guide groove. W...Winch, R...Rope (wire rope),
A, B...Rotating shaft, a, b... Winding section, 5a, 5
b...Spiral groove, 7b...Guide groove, 8...Endless rotation band.

Claims (1)

[Claims] 1 Two rotating shafts A and B are supported in parallel, winding parts a and b of the rope R are formed on the rotating shafts A and B, respectively, and a spiral groove is formed at one end of the winding parts, respectively. 5a and 5b, and a guide groove 7b for pulling in the rope R is formed at the other end of one of the winding parts, and between the rotation axes A and B adjacent to the spiral grooves 5a and 5b. In this state, the endless rotating belt 8 is suspended, the base end of the rope R is attached to the endless rotating belt 8, and the base end of the rope R is pulled by the rotation of the endless rotating belt 8, and the guide groove 7b is pulled. A winch characterized in that it is configured to wind up a rope R drawn in between winding parts a and b.